@article{05029482, title = {An isoperimetric problem for tetrahedra.}, journal = {Zapiski Nauchnykh Seminarov POMI}, volume = {321}, year = {2005}, pages = {28-55}, doi = {10.1007/s10958-007-0431-8}, zbl = {1151.52309}, language = {en}, url = {http://dml.mathdoc.fr/item/05029482} }
Zalgaller, V.A. An isoperimetric problem for tetrahedra.. Zapiski Nauchnykh Seminarov POMI, Tome 321 (2005) pp. 28-55. doi : 10.1007/s10958-007-0431-8. http://gdmltest.u-ga.fr/item/05029482/